Add the word "added" to "parentheses for clarity"

SHA: a83f921
Reason: push, by wantehchang

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

index.html

@@ -1490,7 +1490,7 @@
 </style>
   <meta content="Bikeshed version 82ce88815, updated Thu Sep 7 16:33:55 2023 -0700" name="generator">
   <link href="https://AOMediaCodec.github.io/av1-avif" rel="canonical">
-  <meta content="20b9eaf60d37da17dbab89093c534553a7072d0e" name="document-revision">
+  <meta content="a83f92178297df364d65b273b747166b7a6a77dd" name="document-revision">
 <style>/* Boilerplate: style-autolinks */
 .css.css, .property.property, .descriptor.descriptor {
     color: var(--a-normal-text);
@@ -3438,7 +3438,7 @@ <h4 class="heading settled" id="sato-example-suffix-bit-depth-extension"><span c
        </ul>
      </ul>
    </ul>
-   <p>This is equivalent to the following postfix notation (parentheses for clarity):</p>
+   <p>This is equivalent to the following postfix notation (parentheses added for clarity):</p>
    <math>
     <msub>
      <mi>sample</mi>
@@ -3656,7 +3656,7 @@ <h4 class="heading settled" id="sato-example-residual-bit-depth-extension"><span
        </ul>
      </ul>
    </ul>
-   <p>This is equivalent to the following postfix notation (parentheses for clarity):</p>
+   <p>This is equivalent to the following postfix notation (parentheses added for clarity):</p>
    <math>
     <msub>
      <mi>sample</mi>